<template>
  <div class="mod-echarts">
    <el-row :gutter="20">
      <el-col :span="24">
        <el-card>
          <div id="J_chartLineBox" class="chart-box"></div>
        </el-card>
      </el-col>
      <el-col :span="24">
        <el-card>
          <div id="J_chartBarBox" class="chart-box"></div>
        </el-card>
      </el-col>
      <el-col :span="12">
        <el-card>
          <div id="J_chartPieBox" class="chart-box"></div>
        </el-card>
      </el-col>
      <el-col :span="12">
        <el-card>
          <div id="J_chartScatterBox" class="chart-box"></div>
        </el-card>
      </el-col>
    </el-row>
  </div>
</template>

<script>
    import echarts from 'echarts'

    export default {
      data () {
        return {
          chartLine: null,
          chartBar: null,
          chartPie: null,
          chartScatter: null
        }
      },
      mounted () {
        this.initChartLine()
        this.initChartBar()
        this.initChartPie()
        this.initChartScatter()
      },
      activated () {
            // 由于给echart添加了resize事件, 在组件激活时需要重新resize绘画一次, 否则出现空白bug
        if (this.chartLine) {
          this.chartLine.resize()
        }
        if (this.chartBar) {
          this.chartBar.resize()
        }
        if (this.chartPie) {
          this.chartPie.resize()
        }
        if (this.chartScatter) {
          this.chartScatter.resize()
        }
      },
      methods: {
            // 折线图
        initChartLine () {
          var option = {
            'title': {
              'text': '折线图堆叠'
            },
            'tooltip': {
              'trigger': 'axis'
            },
            'legend': {
              'data': ['邮件营销', '联盟广告', '视频广告', '直接访问', '搜索引擎']
            },
            'grid': {
              'left': '3%',
              'right': '4%',
              'bottom': '3%',
              'containLabel': true
            },
            'toolbox': {
              'feature': {
                'saveAsImage': {}
              }
            },
            'xAxis': {
              'type': 'category',
              'boundaryGap': false,
              'data': ['周一', '周二', '周三', '周四', '周五', '周六', '周日']
            },
            'yAxis': {
              'type': 'value'
            },
            'series': [
              {
                'name': '邮件营销',
                'type': 'line',
                'stack': '总量',
                'data': [120, 132, 101, 134, 90, 230, 210]
              },
              {
                'name': '联盟广告',
                'type': 'line',
                'stack': '总量',
                'data': [220, 182, 191, 234, 290, 330, 310]
              },
              {
                'name': '视频广告',
                'type': 'line',
                'stack': '总量',
                'data': [150, 232, 201, 154, 190, 330, 410]
              },
              {
                'name': '直接访问',
                'type': 'line',
                'stack': '总量',
                'data': [320, 332, 301, 334, 390, 330, 320]
              },
              {
                'name': '搜索引擎',
                'type': 'line',
                'stack': '总量',
                'data': [820, 932, 901, 934, 1290, 1330, 1320]
              }
            ]
          }
          this.chartLine = echarts.init(document.getElementById('J_chartLineBox'))
          this.chartLine.setOption(option)
          window.addEventListener('resize', () => {
            this.chartLine.resize()
          })
        },
            // 柱状图
        initChartBar () {
          var option = {
            tooltip: {
              trigger: 'axis',
              axisPointer: {
                type: 'shadow'
              }
            },
            legend: {
              data: ['直接访问', '邮件营销', '联盟广告', '视频广告', '搜索引擎', '百度', '谷歌', '必应', '其他']
            },
            grid: {
              left: '3%',
              right: '4%',
              bottom: '3%',
              containLabel: true
            },
            xAxis: [
              {
                type: 'category',
                data: ['周一', '周二', '周三', '周四', '周五', '周六', '周日']
              }
            ],
            yAxis: [
              {
                type: 'value'
              }
            ],
            series: [
              {
                name: '直接访问',
                type: 'bar',
                data: [320, 332, 301, 334, 390, 330, 320]
              },
              {
                name: '邮件营销',
                type: 'bar',
                stack: '广告',
                data: [120, 132, 101, 134, 90, 230, 210]
              },
              {
                name: '联盟广告',
                type: 'bar',
                stack: '广告',
                data: [220, 182, 191, 234, 290, 330, 310]
              },
              {
                name: '视频广告',
                type: 'bar',
                stack: '广告',
                data: [150, 232, 201, 154, 190, 330, 410]
              },
              {
                name: '搜索引擎',
                type: 'bar',
                data: [862, 1018, 964, 1026, 1679, 1600, 1570],
                markLine: {
                  lineStyle: {
                    normal: {
                      type: 'dashed'
                    }
                  },
                  data: [
                                    [{type: 'min'}, {type: 'max'}]
                  ]
                }
              },
              {
                name: '百度',
                type: 'bar',
                barWidth: 5,
                stack: '搜索引擎',
                data: [620, 732, 701, 734, 1090, 1130, 1120]
              },
              {
                name: '谷歌',
                type: 'bar',
                stack: '搜索引擎',
                data: [120, 132, 101, 134, 290, 230, 220]
              },
              {
                name: '必应',
                type: 'bar',
                stack: '搜索引擎',
                data: [60, 72, 71, 74, 190, 130, 110]
              },
              {
                name: '其他',
                type: 'bar',
                stack: '搜索引擎',
                data: [62, 82, 91, 84, 109, 110, 120]
              }
            ]
          }
          this.chartBar = echarts.init(document.getElementById('J_chartBarBox'))
          this.chartBar.setOption(option)
          window.addEventListener('resize', () => {
            this.chartBar.resize()
          })
        },
            // 饼状图
        initChartPie () {
          var option = {
            backgroundColor: '#2c343c',
            title: {
              text: 'Customized Pie',
              left: 'center',
              top: 20,
              textStyle: {
                color: '#ccc'
              }
            },
            tooltip: {
              trigger: 'item',
              formatter: '{a} <br/>{b} : {c} ({d}%)'
            },
            visualMap: {
              show: false,
              min: 80,
              max: 600,
              inRange: {
                colorLightness: [0, 1]
              }
            },
            series: [
              {
                name: '访问来源',
                type: 'pie',
                radius: '55%',
                center: ['50%', '50%'],
                data: [
                                {value: 335, name: '直接访问'},
                                {value: 310, name: '邮件营销'},
                                {value: 274, name: '联盟广告'},
                                {value: 235, name: '视频广告'},
                                {value: 400, name: '搜索引擎'}
                ].sort(function (a, b) {
                  return a.value - b.value
                }),
                roseType: 'radius',
                label: {
                  normal: {
                    textStyle: {
                      color: 'rgba(255, 255, 255, 0.3)'
                    }
                  }
                },
                labelLine: {
                  normal: {
                    lineStyle: {
                      color: 'rgba(255, 255, 255, 0.3)'
                    },
                    smooth: 0.2,
                    length: 10,
                    length2: 20
                  }
                },
                itemStyle: {
                  normal: {
                    color: '#c23531',
                    shadowBlur: 200,
                    shadowColor: 'rgba(0, 0, 0, 0.5)'
                  }
                },
                animationType: 'scale',
                animationEasing: 'elasticOut',
                animationDelay: function (idx) {
                  return Math.random() * 200
                }
              }
            ]
          }
          this.chartPie = echarts.init(document.getElementById('J_chartPieBox'))
          this.chartPie.setOption(option)
          window.addEventListener('resize', () => {
            this.chartPie.resize()
          })
        },
            // 散点图
        initChartScatter () {
          var option = {
            backgroundColor: new echarts.graphic.RadialGradient(0.3, 0.3, 0.8, [
                        {offset: 0, color: '#f7f8fa'},
                        {offset: 1, color: '#cdd0d5'}
            ]),
            title: {
              text: '1990 与 2015 年各国家人均寿命与 GDP'
            },
            legend: {
              right: 10,
              data: ['1990', '2015']
            },
            xAxis: {
              splitLine: {
                lineStyle: {
                  type: 'dashed'
                }
              }
            },
            yAxis: {
              splitLine: {
                lineStyle: {
                  type: 'dashed'
                }
              },
              scale: true
            },
            series: [
              {
                name: '1990',
                data: [
                                [28604, 77, 17096869, 'Australia', 1990],
                                [31163, 77.4, 27662440, 'Canada', 1990],
                                [1516, 68, 1154605773, 'China', 1990],
                                [13670, 74.7, 10582082, 'Cuba', 1990],
                                [28599, 75, 4986705, 'Finland', 1990],
                                [29476, 77.1, 56943299, 'France', 1990],
                                [31476, 75.4, 78958237, 'Germany', 1990],
                                [28666, 78.1, 254830, 'Iceland', 1990],
                                [1777, 57.7, 870601776, 'India', 1990],
                                [29550, 79.1, 122249285, 'Japan', 1990],
                                [2076, 67.9, 20194354, 'North Korea', 1990],
                                [12087, 72, 42972254, 'South Korea', 1990],
                                [24021, 75.4, 3397534, 'New Zealand', 1990],
                                [43296, 76.8, 4240375, 'Norway', 1990],
                                [10088, 70.8, 38195258, 'Poland', 1990],
                                [19349, 69.6, 147568552, 'Russia', 1990],
                                [10670, 67.3, 53994605, 'Turkey', 1990],
                                [26424, 75.7, 57110117, 'United Kingdom', 1990],
                                [37062, 75.4, 252847810, 'United States', 1990]
                ],
                type: 'scatter',
                symbolSize: function (data) {
                  return Math.sqrt(data[2]) / 5e2
                },
                label: {
                  emphasis: {
                    show: true,
                    formatter: function (param) {
                      return param.data[3]
                    },
                    position: 'top'
                  }
                },
                itemStyle: {
                  normal: {
                    shadowBlur: 10,
                    shadowColor: 'rgba(120, 36, 50, 0.5)',
                    shadowOffsetY: 5,
                    color: new echarts.graphic.RadialGradient(0.4, 0.3, 1, [
                                        {offset: 0, color: 'rgb(251, 118, 123)'},
                                        {offset: 1, color: 'rgb(204, 46, 72)'}
                    ])
                  }
                }
              },
              {
                name: '2015',
                data: [
                                [44056, 81.8, 23968973, 'Australia', 2015],
                                [43294, 81.7, 35939927, 'Canada', 2015],
                                [13334, 76.9, 1376048943, 'China', 2015],
                                [21291, 78.5, 11389562, 'Cuba', 2015],
                                [38923, 80.8, 5503457, 'Finland', 2015],
                                [37599, 81.9, 64395345, 'France', 2015],
                                [44053, 81.1, 80688545, 'Germany', 2015],
                                [42182, 82.8, 329425, 'Iceland', 2015],
                                [5903, 66.8, 1311050527, 'India', 2015],
                                [36162, 83.5, 126573481, 'Japan', 2015],
                                [1390, 71.4, 25155317, 'North Korea', 2015],
                                [34644, 80.7, 50293439, 'South Korea', 2015],
                                [34186, 80.6, 4528526, 'New Zealand', 2015],
                                [64304, 81.6, 5210967, 'Norway', 2015],
                                [24787, 77.3, 38611794, 'Poland', 2015],
                                [23038, 73.13, 143456918, 'Russia', 2015],
                                [19360, 76.5, 78665830, 'Turkey', 2015],
                                [38225, 81.4, 64715810, 'United Kingdom', 2015],
                                [53354, 79.1, 321773631, 'United States', 2015]
                ],
                type: 'scatter',
                symbolSize: function (data) {
                  return Math.sqrt(data[2]) / 5e2
                },
                label: {
                  emphasis: {
                    show: true,
                    formatter: function (param) {
                      return param.data[3]
                    },
                    position: 'top'
                  }
                },
                itemStyle: {
                  normal: {
                    shadowBlur: 10,
                    shadowColor: 'rgba(25, 100, 150, 0.5)',
                    shadowOffsetY: 5,
                    color: new echarts.graphic.RadialGradient(0.4, 0.3, 1, [
                                        {offset: 0, color: 'rgb(129, 227, 238)'},
                                        {offset: 1, color: 'rgb(25, 183, 207)'}
                    ])
                  }
                }
              }
            ]
          }
          this.chartPie = echarts.init(document.getElementById('J_chartScatterBox'))
          this.chartPie.setOption(option)
          window.addEventListener('resize', () => {
            this.chartPie.resize()
          })
        }
      }
    }
</script>

<style lang="scss">
  .mod-echarts {
    > .el-alert {
      margin-bottom: 10px;
    }

    > .el-row {
      margin-top: -10px;
      margin-bottom: -10px;

      .el-col {
        padding-top: 10px;
        padding-bottom: 10px;
      }
    }

    .chart-box {
      min-height: 400px;
    }
  }
</style>
